CD9 Recombinant Monoclonal Antibody

Code: CSB-RA004969MA1HU

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Size:

50μl100μl

US$210

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Species Reactivity: Human

Application: ELISA, FC

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Target Background

Product Details

Uniprot NO.

P21926

Target Names

CD9

Alternative Names

Tetraspanin 29 antibody; 5H9 antibody; 5H9 antigen antibody; Antigen defined by monoclonal antibody 602 29 antibody; Antigen defined by monoclonal antibody 60229 antibody; BA-2/p24 antigen antibody; BA2 antibody; BTCC 1 antibody; BTCC1 antibody; CD9 antibody; CD9 antigen antibody; CD9 antigen p24 antibody; CD9 molecule antibody; CD9_HUMAN antibody; Cell growth inhibiting gene 2 protein antibody; Cell growth-inhibiting gene 2 protein antibody; DRAP 27 antibody; DRAP27 antibody; GIG2 antibody; Growth inhibiting gene 2 protein antibody; Leukocyte antigen MIC3 antibody; MIC3 antibody; Motility related protein antibody; Motility-related protein antibody; MRP 1 antibody; MRP-1 antibody; MRP1 antibody; p24 antibody; p24 antigen antibody; Tetraspanin-29 antibody; Tspan 29 antibody; Tspan-29 antibody; TSPAN29 antibody

Species Reactivity

Human

Immunogen

Recombinant Human CD9 protein

Conjugate

Non-conjugated

Clonality

Monoclonal

Isotype

hIgG1

Clone No.

1E8H1

Purification Method

Affinity-chromatography

Concentration

It differs from different batches. Please contact us to confirm it.

Buffer

Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, PH 7.4

Form

Liquid
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.

Scope Application

ELISA Protocol Flow Cytometry (FC) Protocol

Recommended Dilution

Application	Recommended Dilution
FC	1:50-1:200

Storage

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.

Lead Time

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.

Usage

For Research Use Only. Not for use in diagnostic or therapeutic procedures.

Datasheet & COA

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Images

Overlay Peak curve showing PC-3 cells stained with CSB-RA004969MA1HU (red line) at 1:100. The cells were fixed in 4% formaldehyde and permeated by 0.2% TritonX-100 for 10min. Then 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (1ug/1*10⁶cells) for 45min at 4℃. The secondary antibody used was Fluorescein (FITC) AffiniPure Goat Anti-Human IgG, Fcγ fragment specific at 1:200 dilution for 35min at 4℃.Control antibody (green line) was human IgG1 (1ug/1*10⁶cells) used under the same conditions. Acquisition of >10,000 events was performed.

Description

CD9 is a member of the tetraspanin superfamily, a group of four-transmembrane domain proteins that organize membrane microdomains and regulate diverse cellular processes including cell adhesion, motility, and signal transduction. This versatile molecule plays critical roles in fertilization, platelet activation, and tumor metastasis, making it a valuable target for researchers investigating cancer biology, reproductive physiology, and immune cell function. CD9 expression patterns have been linked to metastatic potential in various cancers, positioning it as both a prognostic marker and a subject of mechanistic investigation.

This recombinant monoclonal antibody, clone 1E8H1, offers the consistency and reliability that demanding experimental workflows require. Produced using recombinant technology with a defined sequence, this antibody eliminates the lot-to-lot variability that can compromise longitudinal studies and reproducibility. The human IgG1 isotype format and affinity chromatography purification ensure high specificity for your target while minimizing background interference.

Validation studies confirm robust performance in flow cytometry applications, with recommended dilutions of 1:50 to 1:200 providing flexibility to optimize signal-to-noise ratios for your specific experimental conditions. Testing in PC-3 cells, a human prostate cancer line commonly used in metastasis research, demonstrated clear positive staining compared to isotype controls, with the antibody effectively detecting CD9 in fixed and permeabilized cells.

Whether you are characterizing tetraspanin expression in tumor cell populations, investigating exosome biology where CD9 serves as a canonical marker, or exploring cell-cell fusion events, this antibody provides a dependable tool for human sample analysis in flow cytometry and ELISA-based detection systems.

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Target Background

Function(From Uniprot)

Integral membrane protein associated with integrins, which regulates different processes, such as sperm-egg fusion, platelet activation and aggregation, and cell adhesion. Present at the cell surface of oocytes and plays a key role in sperm-egg fusion, possibly by organizing multiprotein complexes and the morphology of the membrane required for the fusion. In myoblasts, associates with CD81 and PTGFRN and inhibits myotube fusion during muscle regeneration. In macrophages, associates with CD81 and beta-1 and beta-2 integrins, and prevents macrophage fusion into multinucleated giant cells specialized in ingesting complement-opsonized large particles. Also prevents the fusion between mononuclear cell progenitors into osteoclasts in charge of bone resorption. Acts as a receptor for PSG17. Involved in platelet activation and aggregation. Regulates paranodal junction formation. Involved in cell adhesion, cell motility and tumor metastasis.

Gene References into Functions

assays. Results from the present study demonstrated that CD9 was highly expressed in the highly metastatic Hepatocellular carcinoma (HCC)cells and promoted HCC cell migration. This protein may be a novel target for regulating the invasive phenotype in HCC. PMID:29749468
The species-specific traits in CD9 and CD81 distribution during sperm maturation were compared between mice and humans. A mutual position of CD9/CD81 is shown in human spermatozoa in the acrosomal cap, however in mice, CD9 and CD81 occupy a distinct area. PMID:29671763
CD9 expression predicts some clinical characteristics and indicates an unfavorable prognosis in acute lymphoblastic leukemia patients. PMID:29286918
CD9-CD81 blockage reduces exosome-mediated HIV-1 entry. PMID:29429034
Exosomal markers CD63 and CD9 are elevated in pancreatic tumor tissues. PMID:28609367
CD9 expression could be a biomarker for poor prognosis in invasive breast carcinoma PMID:28178752
CD9 stabilizes gp130 by blocking its ubiquitin-dependent lysosomal degradation to promote the IL6-gp130-bone marrow X-linked non-receptor tyrosine kinase-STAT3 signaling for maintaining GSC selfrenewal and tumorigenic capacity. PMID:27740621
CD9 was highly expressed on extravillous trophoblast (EVT) at the boundary region of EVT invasion and intravascular EVT. CD9 expression on Swan71 cells was reduced under hypoxic conditions, while its expression was increased by co-culture with HUVEC. CD9 could attenuate EVT invasion under the influence of an oxygen environment and maternal endothelial cells, proposing CD9 as a potential regulator of human placentation. PMID:27780531
As for 18Lin(-), CD34(-) HSCs are characterized by low expression of the tetraspanin CD9, which promotes homing, and high expression of the peptidase CD26, which inhibits homing. PMID:28687990
The findings suggest that, in contrast with previous models, the ligand-binding site of integrin alphaVbeta3, binds to the constant region (helices A and B) of the EC2 domain of CD9, CD81, and CD151 antigens. PMID:27993971
Data suggest that CD9 should be further evaluated as a target for glioblastoma treatment. PMID:26573230
Collectively, using tetraspanin CD9 in tandem with E-cadherin as a biomarker in renal cell carcinoma will help to not only distinguish between types, but also predict the metastatic potential of RCC. PMID:26855131
Data indicate that CD9 is implicated in BCC invasiveness and metastases by cellular mechanisms that involve specific CD9+ plasma membrane protrusions of BCCs. PMID:25762645
CD9-enriched microdomains negatively regulate LPS-induced receptor formation by preventing CD14 from accumulating into lipid rafts. [Review] PMID:26378766
Results indicate that CD9 downregulation promoted pancreatic cancer cell proliferation and migration through at least in part, enhancing the cell surface expression of EGFR. PMID:25955689
CD9 expression is upregulated and its expression is correlated with tumor stage and lymph node metastasis in esophageal squamous cell carcinoma patients PMID:26045817
Although the current findings did not prove any hypothesis, the indispensable role of CD9 in fertilization process was not excluded and the precise role of CD9 remains unexplained. [review] PMID:25536312
CD9 plays a role in the dysmegakaryopoiesis that occurs in primary myelofibrosis. PMID:25840601
High CD9 is associated with B acute lymphoblastic leukemia. PMID:26320102
These results suggested that the mechanism underlying CD9-induced suppression of cell proliferation may involve the inhibition of phosphorylation of EGFR and the activity of PI3K/Akt and MAPK/Erk signaling pathways PMID:25760022
OY-TES-1 downregulation in liver cancer cells inhibits cell proliferation by upregulating CD and downregulating NANOG. PMID:25673160
Low levels of CD9 coincidental with a novel nonsense mutation in glycoprotein Ibbeta in a patient with Bernard-Soulier syndrome. PMID:26275786
The cysteine residues involved in the formation of the disulfide bridges in CD9 EC2 were all essential for inhibiting multinucleated giant cell formation but a conserved glycine residue in the tetraspanin-defining 'CCG' motif was not. PMID:25551757
alteration in CD9 expression was sufficient to profoundly disrupt cellular actin arrangement and endogenous cell contraction by interfering with RhoA signaling. PMID:25184334
The mechanism responsible for this negative regulation exerted by CD9 on LFA-1 adhesion does not involve changes in the affinity state of this integrin but seems to be related to alterations in its state of aggregation. PMID:26003300
The results demonstrate that hypoxia regulates CD9 expression and CD9-mediated keratinocyte migration via the p38/MAPK pathway. PMID:25200404
Report shows that breast cancer cells contain a nuclear CD9 pool and that the abrogation of CD9 expression results in multipolar mitoses and polynucleation. PMID:25103498
this study indicated that sialylation involved in the development of MDR of AML cells probably through ST3GAL5 or ST8SIA4 regulating the activity of PI3K/Akt signaling and the expression of P-gp and MRP1. PMID:24531716
switch from alphavbeta5 to alphavbeta6 integrin plays a key role in CD9-regulated cell migration and MMP-9 activation in keratinocytes PMID:25265322
High expression of CD9 was statistically associated with older patients PMID:24553302
CD9 and CD63 tetraspanins block HIV-1-induced cell-cell fusion at the transition from hemifusion to pore opening. PMID:24608085
Loss of CD9 expression is associated with enhancement of invasive potential of malignant mesothelioma. PMID:24466195
CD9 and CD151 support integrin-mediated signaling at the immunological synapse. PMID:24723389
Introduction of CD9 expression in Raji cells resulted in significantly increased cell proliferation and HDAC activity compared to mock transfected Raji cells. PMID:24747564
Heparin-binding epidermal growth factor and CD9 are likely implicated in processes that are highly relevant for MS lesion formation PMID:24038577
this study points to EGFR as a key mediator between CD9-mediated pro-MMP-9 release and cellular invasion of HT1080 cells. PMID:24246676
The second extracellular loop of CD9 was responsible for the upregulation of MMP-9 production. PMID:23840773
This is the first study of the expression and prognostic potential of the tetraspanins in oral dysplasia. PMID:24201754
Low CD9 expression is associated with malignant mesothelioma. PMID:23128478
Both CD9/CD81-silenced cells and CD151-silenced cells showed delayed alpha3beta1-dependent cell spreading on laminin-332. PMID:23613949
Data indicate that CD9 acts as scaffold and assembles a ternary JAM-A-CD9-alphavbeta3 integrin complex from which JAM-A is released upon bFGF stimulation. PMID:23389628
these data suggest that CD9 is a novel marker for a human germinal center-B cell subset that is committed to plasma cell lineage. PMID:23291167
CD9 overexpression was confirmed in osteotropic cells. CD9 was significantly overexpressed in bone metastases versus primary tumors and visceral metastatic lesions. PMID:23225418
tetraspanin CD9 modulates molecular organization of integrins in lymphatic endothelial cells, thereby supporting several functions required for lymphangiogenesis PMID:23223239
Low CD9 expression is associated with gallbladder neoplasms PMID:22613496
identifies human male germ cells with capability of long-term survival and cell turnover in the xenogeneic testis environment PMID:22592495
Knockdown of CD9 by siRNA and blockage of CD9 activity by ALB6 in ovarian cancer cells demonstrated that constitutive activation of NF-kappaB is CD9 dependent and that CD9 is involved in anti-apoptosis PMID:22095071
CD9 increases GCM1 expression via the cAMP/PKA signaling pathway, resulting in the increase in ERVWE1 expression. PMID:19692500
The absence or down-regulation of CD9 expression and point mutation may play a considerable role in the pathway of the malignant transformation in the BEAS-2B cells induced by mineral powder. PMID:17997888
CD9 associates with ADAM17 and, through this interaction, negatively regulates the sheddase activity of ADAM17. PMID:21365281